Infiniti FX35 / FX45. Manual — part 211
INTELLIGENT KEY SYSTEM
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< SERVICE INFORMATION >
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Check CAN Communication System Inspection
INFOID:0000000001534751
1.
PERFORM SELF DIAGNOSTIC
1.
Turn ignition switch ON and wait for 2 seconds or more.
2.
Check “Self Diagnostic Result” of BCM.
Is “CAN COMM CIRCUIT” displayed?
YES
>> Refer to
BCS-13, "U1000 CAN Communication Circuit"
.
NO
>> INSPECTION END.
Check Intelligent Key Unit Power Supply and Ground Circuit
INFOID:0000000001327853
1.
CHECK POWER SUPPLY CIRCUIT
1.
Turn ignition knob OFF position.
2.
Disconnect Intelligent Key unit connector.
3.
Check voltage between Intelligent Key unit connector and
ground.
OK or NG
Door lock non-operation warning does not
sound.
Intelligent Key warning chime does not sound
1.
Intelligent Key battery inspection
2.
Check door request switch
3.
Check inside key antenna
4.
Check Intelligent Key warning buzzer
5.
Replace Intelligent Key unit
Ignition knob OFF position warning chime does not sound
1.
Intelligent Key battery inspection
2.
Check door request switch
3.
Check outside key antenna
4.
Check Intelligent Key warning buzzer
5.
Check ignition knob switch
6.
Replace Intelligent Key unit
Door ajar alarm
1.
Check CAN communications
2.
Check door request switch
3.
Check outside key antenna
4.
Check Intelligent Key warning buzzer
5.
Check door switch
6.
Intelligent Key battery inspection
7.
Replace Intelligent Key unit
Symptom
Diagnoses service procedure
Refer to page
Connector
Terminal
(Wire color)
Ignition knob position
M34
(+)
(–)
OFF
ACC
ON
6
(W)
Ground
0V
0V
Battery voltage
10
(LG)
0V
Battery voltage
Battery voltage
11
(L/R)
Battery voltage
Battery voltage
Battery voltage
MIIB0360E
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< SERVICE INFORMATION >
INTELLIGENT KEY SYSTEM
OK
>> GO TO 2.
NG
>> Repair or replace Intelligent Key power supply circuit.
2.
CHECK GROUND CIRCUIT
Check continuity between Intelligent Key unit connector M34 termi-
nal 12 (B) and ground.
OK or NG
OK
>> Power supply and ground circuits are normal.
NG
>> Repair or replace the Intelligent Key unit ground circuit.
Check Key Switch (Intelligent Key Unit Input)
INFOID:0000000001327854
1.
CHECK KEY SWITCH
With CONSULT-III
Display “KEY SW” on DATA MONITOR screen, and check if ON-OFF display is linked to insertion of mechan-
ical key in ignition knob.
OK or NG
OK
>> Key switch is OK.
NG
>> GO TO 2.
2.
CHECK KEY SWITCH POWER SUPPLY CIRCUIT
1.
Remove mechanical key from ignition knob.
2.
Disconnect key switch and ignition knob switch connector.
3.
Check voltage between key switch and ignition knob switch connector M22 terminal 3 (L/R) and ground.
OK or NG
OK
>> GO TO 3.
NG
>> Repair or replace key switch power supply circuit.
3.
CHECK KEY SWITCH OPERATION
Check continuity between key switch and ignition knob switch terminals 3 and 4.
OK or NG
OK
>> GO TO 4.
NG
>> Replace key switch.
12 (B) - Ground
: Continuity should exist.
MIIB0361E
When key is inserted in ignition knob
: ON
When key is removed in ignition knob
: OFF
3 (L/R) - Ground
: Battery voltage
PIIA6738E
Terminals
Condition
Continuity
3
4
Key is inserted in ignition key cylinder.
Yes
Key is removed from ignition key cylinder.
No
PIIA6140E
INTELLIGENT KEY SYSTEM
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< SERVICE INFORMATION >
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4.
CHECK KEY SWITCH CIRCUIT
1.
Disconnect Intelligent Key unit connector.
2.
Check continuity between Intelligent Key unit connector M34 terminal 7 (B/W) and key switch and ignition
knob switch connector M22 terminal 4 (B/W).
3.
Check continuity between key switch and ignition knob switch
connector M22 terminal 4 (B/W) and ground.
OK or NG
OK
>> Replace Intelligent key unit.
NG
>> Repair or replace harness between Intelligent Key unit
and key switch and ignition knob switch.
Check Key Switch (BCM Input)
INFOID:0000000001327855
1.
CHECK KEY SWITCH POWER SUPPLY CIRCUIT
1.
Turn ignition knob OFF position.
2.
Disconnect key switch and ignition knob switch connector.
3.
Check voltage between key switch and ignition knob switch con-
nector M22 terminal 3 (L/R) and ground.
OK or NG
OK
>> GO TO 2.
NG
>> Check harness between key switch and ignition knob
switch and fuse.
2.
CHECK KEY SWITCH
Check continuity between key switch and ignition knob switch as fol-
lows.
OK or NG
OK
>> GO TO 3.
NG
>> Replace key switch and ignition knob switch.
3.
CHECK KEY SWITCH SIGNAL CIRCUIT
7 (B/W) - 4 (B/W)
: Continuity should exist.
4 (B/W) - Ground
: Continuity should not exist.
PIIA6740E
3 (L/R) – Ground
: Battery voltage.
PIIA5093E
Terminals
Condition
Continuity
3
4
Key is inserted in ignition key cylinder.
Yes
Key is removed from ignition key cylinder.
No
PIIA6140E
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< SERVICE INFORMATION >
INTELLIGENT KEY SYSTEM
1.
Disconnect key switch and ignition knob switch connector and
BCM connector.
2.
Check continuity between key switch and ignition knob switch
connector M22 terminal 4 (B/W) and BCM connector M3 termi-
nal 37 (B/W).
3.
Check continuity between key switch and ignition knob switch
connector M22 terminal 4 (B/W) and ground.
OK or NG
OK
>> Key switch (BCM input) circuit is OK.
NG
>> Repair or replace harness between key switch and ignition knob switch and BCM.
Check Ignition Knob Switch
INFOID:0000000001327856
1.
CHECK IGNITION KNOB SWITCH
With CONSULT-III
Display “PUSH SW” on “DATA MONITOR” screen, and check if ON/OFF display is linked to ignition knob oper-
ation.
OK or NG
OK
>> Ignition knob switch is OK.
NG
>> GO TO 2.
2.
CHECK IGNITION KNOB SWITCH POWER SUPPLY CIRCUIT
1.
Turn ignition knob LOCK position.
2.
Disconnect key switch and ignition knob switch connector.
3.
Check voltage between key switch and ignition knob switch connector M22 terminal 1 (L/R) and ground.
OK or NG
OK
>> GO TO 3.
NG
>> Repair or replace key switch and ignition knob switch
power supply circuit.
3.
CHECK IGNITION KNOB SWITCH OPERATION
Check continuity between key switch and ignition knob switch terminals 1 and 2.
4 (B/W) – 37 (B/W)
: Continuity should exist.
4 (B/W) – Ground
: Continuity should not exist.
PIIA5095E
Press ignition knob.
: ON
Return ignition knob (release hands
from ignition knob)
: OFF
1 (L/R) - Ground
: Battery voltage
PIIA6741E
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